Bb-D2 DIY Discrete Op-Amp DI Kit

169.00 excl. VAT

Bumblebee Bb-D2 is a Discrete Op-Amp based active Direct Box with hi-end dual Jfet input stage and custom toroidal output transformer.

5.00 out of 5 based on 1 customer rating
(1 customer review)
    • 4.95 €
    • 99 €

Bumblebee Bb-D2 Discrete Op-Amp Direct Box DIY Kit

Bumblebee Bb-D2 is a discrete op-amp based Direct Box DIY kit with hi-end LSK389 dual Jfet input stage. The output is transformer-balanced with original custom-designed toroidal transformer.

We’ve designed the Bumblebee Bb-D2 DI to provide the high fidelity input stage for instruments during the direct recording or live reproduction. It is well-known that the input stage has the highest influence on signal in the whole signal chain. So, it is wise to use the best possible solution for the first device that directly interacts with your instrument.

The very high input impedance of Bumblebee Bb-D2 provides the proper loading for your passive pickups. Correctly loaded pickup coils tend to open up their sonic character in finest details. It is particularly obvious in hi-mid range, adding contour and clarity to the sound. Furthermore, the precision input Jfet reproduces and amplifies these specifics with ultimate authenticity.

What is Included

  • All the electronic parts – resistors, capacitors, diodes
  • LSK389B dual Jfet transistor
  • BC547C and BC557C bipolar transistors
  • Custom designed toroidal output transformer
  • Neutrik connectors – a pair of jacks and an output XLR
  • PCB (printed circuit board)
  • Wire for grounding the top of the enclosure
  • Pre-drilled and punched, powder coated and silkscreened enclosure
  • All the required screws

Technical Information

  • Input Impedance: 10 MOhms
  • Maximum Input Level: 3.00 Vrms (+12 dBu)
  • Output Impedance (Balanced Out): 50 Ohms
  • Output Impedance (Amp Out): 10 KOhms
  • Powered by +48V phantom power
  • Electronic ground lift for breaking ground loops
  • Dimensions (L x W x H): 141 x 75 x 45 mm
  • Weight: 300 gr / 10 oz
  1. 5 out of 5

    I purchased one yesterday, I mounted the kit and decided to buy another one today! Incredible sound, very accurate, high fidelity with the source. I tested it with a bass and electric guitar, with the my keyboards (in mono) and it was fantastic! So I decided to buy another one to have the possibility to record with stereo. I never had this sound before with another DI. I own the Manley Dual Mono Tube Direct Interface and I can say that the BB-D2 is better for me!
    Thank you very much, Artur, for your work and for the deal!

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